side effects of injection vitamin b12 What are the known side

Since the vitamins are delivered directly into the bloodstream, individuals often experience immediate benefits, such as increased energy, improved mood, and enhanced focus

Not a drug, food, cosmetic, or dietary supplement

Those with a diagnosed deficiency - usually through a symptom checker alongside a simple blood test - will be prescribed and offered regular vitamin B12 intramuscular injections through their GP practice, district nurse, or NHS services

They include 'overactive' immune system disorders, which is when the bodys immune system attacks and destroys its own tissue, and 'underactive' system disorders, which is when the bodys defence against disease is reduced